In AWS Elastic Beanstalk, if the application returns any response other than 200 ,OK or there is no response within the
configured InactivityTimeout period, ____.

A.
SQS once again makes the message visible in the queue and available for another attempt at processing

B.
SQS waits for another timeout

C.
SQS run DeleteMessagecall and deletes the message from the queue

D.
SQS sends a message to the application with the MessageID and pending status

Explanation:
In AWS Elastic Beanstalk, if the application returns any response other than 200, OK or there is no response within the
configured InactivityTimeout period, SQS once again makes the message visible in the queue and available for another
attempt at processing.
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features-managing-env-tiers.html#worker-environ